RICHFIELD, Ohio, Oct. 17, 2013 (GLOBE NEWSWIRE) -- National Interstate Corporation (Nasdaq:NATL) announced today that the Company will release its 2013 third quarter results after the market closes on Tuesday, October 29, 2013. The earnings release will be available shortly thereafter on the Company's investor relations website at http://invest.natl.com. In conjunction with the earnings release, third quarter results will be discussed via conference call at 10:00 a.m. Eastern Time on Wednesday, October 30, 2013.

There are two communication modes available to listen to the call. Telephone access to the conference call and Q and A session will be available by dialing (877) 837-3911. Please dial in 5 to 10 minutes prior to the scheduled starting time. The conference call will be broadcast live over the Internet. To listen to the call via the Internet, access our website at http://invest.natl.com and follow the instructions at the web cast link. The archived web cast will be available shortly after the call on our website.

About National Interstate Corporation

An Insurance Experience Built Around You.

National Interstate Corporation (Nasdaq:NATL), founded in 1989, is the holding company for a specialty property-casualty insurance group which differentiates itself by offering products and services designed to meet the unique needs of niche markets. Products include insurance for passenger, truck, and moving and storage transportation companies, alternative risk transfer, or captive programs for commercial risks, specialty personal lines products focused primarily on recreational vehicle owners, and transportation and general commercial insurance in Hawaii and Alaska. The Company's insurance subsidiaries, including the three primary insurers, National Interstate Insurance Company, Vanliner Insurance Company and Triumphe Casualty Company, are rated "A" (Excellent) by A.M. Best Company. Headquartered in Richfield, Ohio, National Interstate is an independently operated subsidiary of Great American Insurance Company, a property-casualty subsidiary of American Financial Group, Inc. (NYSE:AFG) (Nasdaq:AFG).